<script lang="ts">
  import ChangeDate, {
    type AbsoluteResult,
    type RelativeResult,
  } from '$lib/components/shared-components/change-date.svelte';
  import { user } from '$lib/stores/user.store';
  import { getSelectedAssets } from '$lib/utils/asset-utils';
  import { handleError } from '$lib/utils/handle-error';
  import { updateAssets } from '@immich/sdk';
  import { mdiCalendarEditOutline } from '@mdi/js';
  import { DateTime, Duration } from 'luxon';
  import { t } from 'svelte-i18n';
  import MenuOption from '../../shared-components/context-menu/menu-option.svelte';
  import { getAssetControlContext } from '../asset-select-control-bar.svelte';
  import { fromTimelinePlainDateTime } from '$lib/utils/timeline-util.js';
  interface Props {
    menuItem?: boolean;
  }

  let { menuItem = false }: Props = $props();
  const { clearSelect, getOwnedAssets } = getAssetControlContext();

  let isShowChangeDate = $state(false);

  let currentInterval = $derived.by(() => {
    if (isShowChangeDate) {
      const ids = getSelectedAssets(getOwnedAssets(), $user);
      const assets = getOwnedAssets().filter((asset) => ids.includes(asset.id));
      const imageTimestamps = assets.map((asset) => {
        let localDateTime = fromTimelinePlainDateTime(asset.localDateTime);
        let fileCreatedAt = fromTimelinePlainDateTime(asset.fileCreatedAt);
        let offsetMinutes = localDateTime.diff(fileCreatedAt, 'minutes').shiftTo('minutes').minutes;
        const timeZone = `UTC${offsetMinutes >= 0 ? '+' : ''}${Duration.fromObject({ minutes: offsetMinutes }).toFormat('hh:mm')}`;
        return fileCreatedAt.setZone('utc', { keepLocalTime: true }).setZone(timeZone);
      });
      let minTimestamp = imageTimestamps[0];
      let maxTimestamp = imageTimestamps[0];
      for (let current of imageTimestamps) {
        if (current < minTimestamp) {
          minTimestamp = current;
        }

        if (current > maxTimestamp) {
          maxTimestamp = current;
        }
      }
      return { start: minTimestamp, end: maxTimestamp };
    }
    return undefined;
  });

  const handleConfirm = async (result: AbsoluteResult | RelativeResult) => {
    isShowChangeDate = false;
    const ids = getSelectedAssets(getOwnedAssets(), $user);

    try {
      if (result.mode === 'absolute') {
        await updateAssets({ assetBulkUpdateDto: { ids, dateTimeOriginal: result.date } });
      } else if (result.mode === 'relative') {
        await updateAssets({
          assetBulkUpdateDto: {
            ids,
            dateTimeRelative: result.duration,
            timeZone: result.timeZone,
          },
        });
      }
    } catch (error) {
      handleError(error, $t('errors.unable_to_change_date'));
    }
    clearSelect();
  };
</script>

{#if menuItem}
  <MenuOption text={$t('change_date')} icon={mdiCalendarEditOutline} onClick={() => (isShowChangeDate = true)} />
{/if}
{#if isShowChangeDate}
  <ChangeDate
    initialDate={DateTime.now()}
    {currentInterval}
    onConfirm={handleConfirm}
    onCancel={() => (isShowChangeDate = false)}
  />
{/if}
